package inheritance;

public class Student {

    public String name;//public : 任意
    protected int number ; // protected : 本类、本包、子类
    int age ; // package-private : 本类、本包
    private String head ; // private : 本类

    public void show() {
        System.out.println( "name : " + this.name + " , number : " + this.number + " , age : " + this.age + " , head : " + this.head );
    }

    public static void main(String[] args) {
        Student s = new Student();
        s.name = "张无忌" ;
        s.number = 20201234;
        s.age = 18 ;
        s.head = "无忌的头" ;

        s.show();
    }

}
